it用法练习60题

---------------------------------------------------------------最新资料推荐------------------------------------------------------it用法练习60题it用法一.单项选择(32分) 1.It took us over an hour along the street. it用法一.单项选择(32分) 1.It took us overan hour along the street. A.walk B.to walk C.walkingD.walked 2.I think it a great honour to visit your country.A.walkB.to walkC.walkingD.walked 2.I think it a great honour to visit your country. A.to invite B.inviting C.having invitedD.to be invited 3.Many people now make a rule to buy cardsfor their A.to invite B.inviting C.having invited D.to beinvited 3.Many people now make a rule to buy cards fortheir friends before Christmas. A.themselves B.itC.thatD.this 4. is very clear to everyone that he’sround and friends before Christmas. A.themselves B.itC.thatD.this 4. is very clear to everyone that he’sround and tall like a tree. A.This B.What C.That D.It5.In the United States, bus travel doesn’t cost much as train travel, ? tall like a tree. A.This B.What C.ThatD.It 5.In the United States, bus travel doesn’t cost much astrain travel, ? A.don’t they B.does it C.do theyD.doesn’t it 6.Someone is at the door, who is ? A.don’tthey B.does it C.do they D.doesn’t it 6.Someone is at the1 / 13door, who is ? A.this B.that C.it D.he 7.It israining cats and dogs. . A.this B.that C.itD.he 7.It is raining cats and dogs. . A.So it is B.So is it C.Neither it is D.Neither is it 8.My home isin that tall building over there. ? A.So it is B.So is it C.Neither it is D.Neither is it 8.My home isin that tall building over there. ? A.Can it see B.Can see it C.Can be seen it D.Can it be seen 9. raining hard for 3 hours without stopping. A.Can it see B.Can see it C.Can be seen it D.Can it be seen 9. raining hard for 3 hours without stopping. A.It is B.It wasC.It has beenD.It had been 10.Has the boy got his bicyclenow? Yes, the police gave . A.It is B.It was C.Ithas been D.It had been 10.Has the boy got his bicycle now?Yes, the police gave . A.him to him B.it to it C.itto him D.him to it 11.Boy, A.him to him B.it toit C.it to him D.him to it 11.Boy, It is, lookslike spring i s coming soon. Yeh, It’ll just be a few more weeks.A.it’s really a nice day today, isn’t it?B.what knid ofweather are we going to have today? C.do you think it is goingto rain today? D.what’ it like outside today? 12.It isimportant their offer. It is, looks like spring is---------------------------------------------------------------最新资料推荐------------------------------------------------------coming soon. Yeh, It’ll just be a few more weeks. A.it’sreally a nice day today, isn’t it? B.what knid of weather arewe going to have today? C.do you think it is going to rain today?D.what’ it like outside today? 12.It is im portant their offer. A.reject B.rejects C.to rejectD.rejecting 13.Has been decided when we are to hold theA.rejectB.rejectsC.to rejectD.rejecting 13.Has been decided when we are to hold the sports-meeting? A.thatB.thisC.itD.what 14.Did Li Lei call me while I was out?Yes, it was that called you. sports-meeting? A.thatB.thisC.itD.what 14.Did Li Lei call me while I was out?Yes, it was that called you. A.him B.he C.whoD.whom 15.Nothing is wrong with the radio ? A.himB.heC.whoD.whom 15.Nothing is wrong with theradio ? A.isn’t it B.is that C.is it D.isn’tthat 16.I don’t know makes her afraid of having herA.isn’t itB.is thatC.is itD.isn’t that 16.Idon’t know makes her afraid of having her business discussed. A.what it is about Mary that B.that is it abut Marywhat C.what is it about Mary that D.that is about Mary what17.Which sentence is wrong? A.I felt it impossible for him to3 / 13take the exam. B.I found it impossible that he might take theexam. C.I thought that he might not take the exam. D.In myopinion he might take the exam. 18.I don’t think difficult for a Chinese student business discussed. A.what itis about Mary that B.that is it abut Mary what C.what is it aboutMary that D.that is about Mary what 17.Which sentence is wrong?A.I felt it impossible for him to take the exam.B.I found it impossible that he might take the exam.C.I thought that hemight not take the exam. D.In my opinion he might take the exam.18.I don’t think difficult for a Chinese student tomaster a foreign language within five years A.that B.itC.tooD.very 19.It’s the second time you late thisweek. to master a foreign language within five years A.thatB.itC.tooD.very 19.It’s the second time you late this week. A.arrive B.arrived C.have arrivedD.had arrived 20.It will not be we meet again. A.arriveB.arrivedC.have arrivedD.had arrived 20.It will not be we meet again. A.long before B.before long C.soon afterD.shortly after 21.It’s demanded that we there on foot.C.soon afterD.shortly after 21.It’s demanded that we there on foot. A.not to go B.don’t go C.not goD.won’t go 22.It is often used to a baby. A.not to go---------------------------------------------------------------最新资料推荐------------------------------------------------------B.don’t goC.not goD.won’t go 22.It is often used toa baby. A.mean to B.stick to C.point to D.refer to23.It was not until 1936 basketball became a A.mean toB.stick toC.point toD.refer to 23.It was not until 1936 basketball became a regular part of the Olympic Games. A.thatB.whenC.whichD.then 24. you met the Englishman? regular part of the Olympic Games. A.that B.when C.whichD.then 24. you met the Englishman? A.Where it was thatB.Who it was thatC.Where was it thatD.Where was that 25. that she has gone to the United States? A.Where it was thatB.Who it was thatC.Where was it thatD.Where was that 25. that she has gone to the United States? A.Was it true B.Isit true C.It is true D.It was true 26. certain thathis invention will lead to the A.Was it true B.Is it trueC.It is trueD.It was true 26. certain that his invention will lead to the development of production. A.That’sB.This isC.It’sD.What’s 27. in 1914 the First World War broke out? development of production.A.That’sB.This isC.It’sD.What’s 27. in1914 the First World War broke out? A.Was that, thatB.Was that, whenC.Was it. thatD.Was it, when 28.It is5 / 13important that she with Mr Williams A.Was that, that B.Was that, when C.Was it. that D.Was it, when 28.It is important that she with Mr Williams immediately. A.speak B.spoke C.will speak D.to speak 29. that theres another good harvest this year. immediately. A.speak B.spoke C.will speak D.to speak 29. that theres another good harvest this year. A.It says B.It is said D.It was said D.He was said 30.It’ll be the first time the play. A.It says B.It is said D.It was said D.Hewas said 30.It’ll be the first time the play. A.I’ve watched B.I’ll watch C.I watch D.I would watch31.It’s no use over spilt milk. A.I’ve watchedB.I’ll watchC.I watchD.I would watch 31.It’s no use over spilt milk. A.cry B.crying C.that you cry D.foryou to cry 32.It was great joy he received the news thathis A.cry B.crying C.that you cry D.for you to cry32.It was great joy he received the news that his longlost son would return home A.as B.that C.so D.forlong lost son would return home A.as B.that C.so D.for 33. Everyone knows that _______ is dangerous to playwith fire, but _______ is difficult is to prevent children from playing with fire. A. it, it B. what,---------------------------------------------------------------最新资料推荐------------------------------------------------------what C. it, what D. what, it 34 I know ______is important to know my own limitations, but _______ isdifficult is to help others to know their own limitations. A.it, it B. what, what C. it, what D. what, it 35 Yes, ______ is difficult to find a job nowadays,but _____ is more difficult is try to find such a job with ahigh salary but little things to do. A. it, it B. what, what C. it, what D. what, it 36 Idislike _______ when others laugh at me in public or thinkpoorly of me behind. A. that B. thoseC. itD. them 37 I hate _______ ifpeople say such things in public. A. that B. those C. it D. them 38 Id prefer_______ if I didnt have to get up early on Sundays. A. that B. such C. it D. which 33.Everyone knows that _______ is dangerous to play with fire, but_______ is difficult is to prevent children from playing withfire. A. it, it B. what, what C. it,what D. what, it 34 I know ______ is importantto know my own limitations, but _______ is difficult is to helpothers to know their own limitations. A. it, it7 / 13B. what, whatC. it, whatD. what, it 35 Yes,______ is difficult to find a job nowadays, but _____ is moredifficult is try to find such a job with a high salary but littlethings to do. A. it, it B. what, what C.it, what D. what, it 36 I dislike _______ whenothers laugh at me in public or think poorly of me behind. A.that B. those C. it D. them 37 I hate _______ if people say such things in public.A. thatB. thoseC. itD. them 38 Id prefer _______ if I didnt have to get up earlyon Sundays. A. that B. such C. it D. which 39 I would appreciate _______ very much if you couldgive me some suggestions. A. this B.that C. it D. you 40Ive no idea. Ijust pretended nobody was at home, so I didnt ask who _______was. A. he B. that C. she D. it 41 Excuse me, I want to have my watch fixed, but I cantfind a repair shop. I know ________ nearby. Come on, Ill showyou. A. one B. it C. some D. that 42 There is only one English-Chinese dictionary in thatbook-shop. I wonder if you still want to buy _______. A. it B. one C. another D. any 43 Will you see to---------------------------------------------------------------最新资料推荐------------------------------------------------------_______ that my children are taken good care of while I am away?A. itB. meC. yourselfD. them 44 Ill see to _______ that all these letters will besent to the post before twelve. A. it B. me C. which D. them 45 Will you see to_______ that the luggage is brought back as soon as possible?A. meB. yourselfC. itD. them 46You may depend on _______ that he will turn up in time.39 I would appreciate _______ very much if you could give mesome suggestions. A. this B. that C.it D. you 40Ive no idea. I justpretended nobody was at home, so I didnt ask who _______ was.A. heB. thatC. sheD. it 41 Excuse me, I want to have my watch fixed, but I cantfind a repair shop. I know ________ nearby. Come on, Ill showyou. A. one B. it C. some D. that 42 There is only one English-Chinese dictionary in thatbook-shop. I wonder if you still want to buy _______. A. it B. one C. another D. any 43 Will you see to_______ that my children are taken good care of while I am away?A. itB. meC. yourself9 / 13D. them 44 Ill see to _______ that all these letters will besent to the post before twelve. A. it B. me C. which D. them 45 Will you see to_______ that the luggage is brought back as soon as possible?A. meB. yourselfC. itD. them 46You may depend on _______ that he will turn up in time.A. itB. meC. whichD. them 47 I cant answer for ________ that the boy is honest.A. itB. meC. whichD. them 48 Why shouldnt I buy a new coat I havent bought _____for five years. A. it B. that C.one D. which 49 He made _____ known to hisfriends that he didnt want to enter politics. A. that B. it C. himself D. him 50 It used to bethought _____ the Earth was flat. A. as B. when C. since D. that 51. The Parkersbought a new house but ______ will need a lot of work beforethey can move in. A. they B. it C. one D. which 52. _______ is well known _______ Hong Kong returnedto China on July 1st, 1997. A. It, that B. As,/ C. As, as D. It, which 53. I dont knowwhether I should go abroad or not, Mum. I leave _______ to---------------------------------------------------------------最新资料推荐------------------------------------------------------your own judgment whether you should do it. A. that B. it C. this D. what A. it B. me C. which D. them 47 I cant answer for________ that the boy is honest. A. it B. me C. which D. them 48 Why shouldnt I buya new coat I havent bought _____ for five years. A. it B. that C. one D. which 49 He made _____known to his friends that he didnt want to enter politics. A.that B. it C. himself D.him 50 It used to be thought _____ the Earth was flat. A. as B. when C. since D. that 51. The Parkersbought a new house but ______ will need a lot of work beforethey can move in. A. they B. it C. one D. which 52. _______ is well known _______ Hong Kong returnedto China on July 1st, 1997. A. It, that B. As,/ C. As, as D. It, which 53. I dont knowwhether I should go abroad or not, Mum. I leave _______ toyour own judgment whether you should do it. A. that B. it C. this D. what 54 Does ________matter if he cant finish the job on time? A. this B. that C. he D. it 55 They are good11 / 13friends. _______ is no wonder that they know each other so well.A. ThisB. ThatC. ThereD. It 56 They live on a busy main road. ______ must be very noisy.A. ThereB. ItC. ThatD. They 57. Why dont you bring ______ to his attention that youare too busy to do it? A. this B. whatC. thatD. it 58. Look at that lady on thestage. Shes already forty. You are joking. She doesnt look________. A. so B. it C. that D. this 59 _______ was known to them all that William had brokenhis promise ______ he would give each of them a gift. A. As;Which B. What; that C. It; that D.It; which 60 In the west, people make _______ a rule to sendChristmas present to their relatives and friends. A. this B. that C. it D. the following 参考答案 1.B 2.D 3.B 4.D 5.B 54 Does ________ matter if he cantfinish the job on time? A. this B. thatC. heD. it 55 They are good friends._______ is no wonder that they know each other so well. A.This B. That C. There D. It 56 They live on a busy main road. ______ must be very noisy.A. ThereB. ItC. That---------------------------------------------------------------最新资料推荐------------------------------------------------------D. They 57. Why dont you bring ______ to his attention that youare too busy to do it? A. this B. whatC. thatD. it 58. Look at that lady on thestage. Shes already forty. You are joking. She doesnt look________. A. so B. it C. that D. this 59 _______ was known to them all that William had brokenhis promise ______ he would give each of them a gift. A. As;Which B. What; that C. It; that D.It; which 60 In the west, people make _______ a rule to sendChristmas present to their relatives and friends. A. this B. that C. it D. the following 参考答案 1.B 2.D 3.B 4.D 5.B 6.C 7.A 8.D 9.C 10.C 11.A 12.C 13.C14.B 15.C 16.A 17.C 18.B 19.C 20.A 21.C 22.D 23.A 24.C 25.B26.C 27.C 28.A 29.B 30.A 31.B 32.B 33C 34C 35C CCD41-45.AAAAC 46-50.AACBD 51-55.BABDD 56-60.BDBCC 6.C 7.A8.D 9.C 10.C 11.A 12.C 13.C 14.B 15.C 16.A 17.C 18.B 19.C 20.A21.C 22.D 23.A 24.C 25.B 26.C 27.C 28.A 29.B 30.A 31.B 32.B33C 34C 35C CCD 41-45.AAAAC 46-50.AACBD 51-55.BABDD56-60.BDBCC13 / 13。

超详细的It的用法归纳总结（附习题及答案）！
一、It是代词
指除人以外的一切生物和事物，用来指代时间、季节、天气距离、环境。

在这里，i是一个虚词，没有任何实际意义。

例如:
①It is a quarter to eight now.
现在是八点差一刻。

②It is midnight. 现在是午夜。

③It is time for breakfast.
现在是吃早饭的时间。

④-What is the date today?今天几月几号?
--It is December 3rd. 十二月三号。

⑤--What season is it?现在是什么季节?
--It is summer. 夏季。

⑥--What is the weather like today?
今天天气如何?
--It is fine.天气很好。

--It is foggy and wet.天气多雾又潮湿。

⑧How far is it from the bus station to your home? 从汽车站到你们家有多远?
⑨It is around five miles to the shopping center.从这儿到购物中心大约有五英里。

初中英语-词法-it 的特殊用法 考试练习题姓名:_____________ 年级:____________ 学号:______________1、浪费这么好吃的食物真是可惜。

(waste, such)_______________________知识点：it 的特殊用法 【答案】It ’s a pity to waste such delicious food.【详解】固定句式：it ’s a pity to do sth“ 做某事很可惜 ” ； waste“ 浪费 ” ； such“ 这么 ” ，修饰名词 food“ 食物 ” ； delicious“ 美味的 ” ，故填 It ’s a pity to waste such delicious food.2、It ____ ____ for me. ( 这对我来说很容易 )知识点：it 的特殊用法 【答案】is easy【详解】固定句式：It is+ 形容词 +for sb to do sth ：对某人来说做某事是 …… ， easy ：容易的，故填 is ； easy 。

3、It ’s important ____________us ___English well.A ． of, to learnB ． for, to learnC ． to, to learnD ． with, learning知识点：it 的特殊用法 【答案】B【详解】句意：对于我们去学好英语是重要的事情。

考查固定句型：It is + 形容词 for/of sb.+to do sth.for sb. 常用于表示事物的特征特点，表示客观形式的形容词，如easy, hard, difficult, interesting, importang, 分析： important 是重要的，因此用介词 for. 故选 B4、playing the piano, takes, Wendy, to practice, an hour, it ( 连词成句 )______________________________.知识点：it 的特殊用法 【答案】It takes Wendy an hour to practice playing the piano【详解】根据标点可知，句子是陈述句，分析所给词汇可知，此处是It takes sb+ 时间 +to do sth 的结构，用不定式作主语， it 作形式主语；所以 to practice playing the piano 作主语； it 作形式主语；故填 It takes Wendy an hour to practice playing the piano“ 温迪花了一个小时练习弹钢琴 ” 。

it的用法专项练习Ⅰ. 把下面句子译成英语，注意it的用法1. 过了很久他才回来。

________________________________________________________________________2. 我们两个月后才会再见面。

________________________________________________________________________3. 我离开这所学校已经20年了________________________________________________________________________4. 直到她摘下墨镜我才认出她是个著名影星。

________________________________________________________________________5. 是约600年前第一块带有表盘(face)和一个时针（hour hand）的钟表被制造出来的。

________________________________________________________________________6. 昨天是他们打扫的教室。

________________________________________________________________________7. 我是在大街上遇见她的父亲的。

________________________________________________________________________8. 我们弄清楚了我们要在何时何地开会。

________________________________________________________________________9. 据说所有的票都卖完了。

________________________________________________________________________10. 我们真的该采取行动了。

七年级英语It 作形式主语练习30题含答案解析1. _______ difficult for me to play the piano well in a short time.A. It isB. This isC. That isD. I'm答案解析：A。

在这个句子中，It作形式主语，真正的主语是后面的“to play the piano well in a short time”，这种结构是“It is + adj. + (for sb.) to do sth.”，表示做某事对某人来说是怎么样的。

选项B“This is”和选项C“That is”没有这种用法，不能作形式主语。

选项D“I'm”表示“我是”，不符合句子结构和语义。

2. _______ a lot of time to go to school on foot every day.A. It takes meB. It spends meC. I takeD. I spend答案解析：A。

这里考查“It takes sb. some time to do sth.”这个句型，It作形式主语，表示花费某人多少时间做某事。

选项B中“spend”的主语应该是人，用法是“sb. spend some time (in) doing sth.”，所以该选项错误。

选项C和D的主语是I，不符合这个句型的结构要求。

3. _______ important to keep our classroom clean.A. ItB. ThatC. ThisD. They答案解析：A。

此句运用的是“It is + adj. + to do sth.”结构，It作形式主语，真正的主语是“to keep our classroom clean”。

选项B“That”、选项C“This”和选项D“They”都不能在这种结构中作形式主语。

4. _______ interesting for my sister to draw pictures.A. It'sB. ItsC. That'sD. She's答案解析：A。

高考英语语法填空代词it的用法单选题30题1.It's a beautiful day. ____ is perfect for a picnic.A.ItB.ThatC.ThisD.One答案：A。

本题中it 作人称代词指代天气，B 选项that 一般用于指代较远的事物，C 选项this 一般用于指代较近的事物，D 选项one 一般用于指代可数名词单数。

2.I love my new phone. ____ has a great camera.A.ItB.ThatC.ThisD.One答案：A。

这里it 作人称代词指代my new phone，B 选项that 一般不用于指代上文提到的事物，C 选项this 一般用于指离说话人较近的事物，D 选项one 指代同类事物中的一个。

3.The cat is very cute. ____ likes to play with balls.A.ItB.ThatC.ThisD.One答案：A。

it 作人称代词指代the cat，B 选项that 一般不用于指代动物，C 选项this 一般用于指离说话人较近的事物，D 选项one 不能指代动物。

4.The baby is sleeping. ____ is so peaceful.A.ItB.ThatC.ThisD.One答案：A。

it 作人称代词指代the baby，B 选项that 一般不用于指代人，C 选项this 一般用于指离说话人较近的事物，D 选项one 不能指代人。

5.The book is interesting. ____ tells a great story.A.ItB.ThatC.ThisD.One答案：A。

it 作人称代词指代the book，B 选项that 一般用于指代较远的事物，C 选项this 一般用于指离说话人较近的事物，D 选项one 一般用于指代可数名词单数。

代词it和one的用法练习题一、选择题1、 I have a pen and I like ＿___ very muchA itB one答案：A解析：it 用来指代前文提到的同一事物，这里指的就是“我拥有的那支笔”，是同一支笔，所以用 it。

2、 I don't have a bike I want to buy ＿___A itB one答案：B解析：one 指代同类事物中的一个，这里说“我没有自行车，想买一辆”，不是特定的某一辆，而是自行车这类东西中的一辆，用 one。

3、 The book is very interesting I'll take ＿___A itB one答案：A解析：这里指的就是前面提到的“这本有趣的书”，是特定的这一本，用 it。

4、 These shoes are too small I need to buy some bigger ＿___A onesB it答案：A解析：ones 指代复数名词，shoes 是复数，这里说“这些鞋子太小了，我需要买些大一点的（鞋子）”，用 ones 来指代“大一点的鞋子”。

5、 I have two cats ＿___ is white and ＿___ is blackA One; the otherB It; the other答案：A解析：onethe other表示“一个……另一个……”，用于两者之间。

这里说“我有两只猫，一只白色，另一只黑色”，用 one 和 the other。

6、 There are many apples on the table You can take ＿___A itB one答案：B解析：“桌子上有很多苹果，你可以拿一个”，不是特定的某个苹果，而是其中的一个，用 one。

7、 The hat you bought is nice I want to buy ＿___ like itA oneB it答案：A解析：“你买的帽子很好看，我想买一个像它那样的”，不是要买你买的那顶，而是类似的一顶，用 one。

语法系列之it句型练习题强调句型it is / was + 被强调部分+ that / who +其它部分对除谓语之外的其它部分强调e.g. 1It was my younger sister that / who I went to the cinema with.e.g. 2It was Trump who became the President of America the day before yesterday.e.g. 3It is ____________________ that makes a difference. 是你做的事而不是你说的话有作用。

1.强调句型的变形it is / was not until … that …e.g. 4It was not until yesterday that I knew the truth.e.g. 5It is ____________________ him. 直到昨天他们才听到他的消息。

e.g. 6It ____________________ she got home. 她直到午夜才回家。

2.形式主语(1)it + be + V-ed thate.g. 7It is known to us all that Taiwan belongs to China.e.g. 8It is said that she would go abroad.e.g. 9____________________ the company earned one million last year. 据报道这家公司去年盈利一百万元。

(2)it + be + ADJ + of / for sb to doe.g. 10It is kind of you to help me.e.g. 11It is wise of you to call the police.e.g. 12It ____________________ the task on time. 对我们来说按时完成任务很困难。

高中英语It的用法专项练习题（含答案）1. Was it during the Second World War_____ he died?A.thatB.whileC.in whichD.then2. Is ____ necessary to complete the design before National Day?A.thisB.thatC.itD.he3. I don't think ____ possible to master a foreign language without much memory work.A.thisB.thatC.itsD.it4. Does ______ matter if he can't finish the job on time?A.thisB.thatC.heD.it5. It was not _____ she took off her glasses _____ I realized she was a famous film star.A.when, thatB.until, thatC.until, thatD.when, then6. I was disappointed with the film. I had expected ______ to be much better.A.thatB.thisC.oneD.it7. It was not until 1920 ______ regular radio broadcasts began.A.whileB.whichC.thatD.since8. ______is a fact that English is being accepted as an international language.A.ThereB.ThisC.ThatD.It9. It was only when I reread this poems recently _____ I began to appreciate their beauty.A.untilB.thatC.thenD.so10. I hate_____when people talk with their mouths full.A.itB.thatC.theseD.them11. It is the ability to do the job _____ matters not where you come from or what you are.A.oneB.thatC.whatD.it12. I like ___ in the autumn when the weather is clear and bright.A. thisB. thatC. itD. one13. ―Do you like ___ here?―Oh, yes. The air, the weather, the way of life. Everything is so nice.A. thisB. TheseC. ThatD. it14. We needed a new cupboard for the kitchen. So Peter made ___ from some wood.A. itB. OneC. HimselfD. another15. The foreign Minister said, " _____ our hope that the two sides will work towards peace."A. This isB. There isC. That isD. It is16. _____ is reported in the newspaper, talks between the two countries are making progress.A. ItB. AsC. ThatD. What17. ― How often do you eat out?― ________, but usually once a week.A. Have no ideaB. It dependsC. As usualD. Generally speaking18. We wanted to get home before dark, but it didn't quite _____ as planed.A. make outB. turn outC. go onD. come up19. ― What do you want to do next? We have half an hour until the basketball game.―________. Whatever you want to do is fine with me.A. It just dependsB. It's up to youC. All rightD. Glad to hear that20. It was ____ back home after the experiment.A. not until midnight did he goB. until midnight that he didn't goC. not until midnight that he wentD. until midnight when he didn't goKeys:1-5 ACDDB 6-10 DCDBA 11-15 ACDBD 16-20 BBBBC。